/**
 ******************************************************************************
 * @file    stm32f4xx_iwdg.h
 * @author  MCD Application Team
 * @version V1.8.0
 * @date    04-November-2016
 * @brief   This file contains all the functions prototypes for the IWDG
 *          firmware library.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
 *
 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
 * You may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *        http://www.st.com/software_license_agreement_liberty_v2
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************
 */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_IWDG_H
#define __STM32F4xx_IWDG_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"

/** @addtogroup STM32F4xx_StdPeriph_Driver
 * @{
 */

/** @addtogroup IWDG
 * @{
 */

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/** @defgroup IWDG_Exported_Constants
 * @{
 */

/** @defgroup IWDG_WriteAccess
 * @{
 */
#define IWDG_WriteAccess_Enable      ((uint16_t)0x5555)
#define IWDG_WriteAccess_Disable     ((uint16_t)0x0000)
#define IS_IWDG_WRITE_ACCESS(ACCESS) (((ACCESS) == IWDG_WriteAccess_Enable) || \
                                      ((ACCESS) == IWDG_WriteAccess_Disable))
/**
 * @}
 */

/** @defgroup IWDG_prescaler
 * @{
 */
#define IWDG_Prescaler_4             ((uint8_t)0x00)
#define IWDG_Prescaler_8             ((uint8_t)0x01)
#define IWDG_Prescaler_16            ((uint8_t)0x02)
#define IWDG_Prescaler_32            ((uint8_t)0x03)
#define IWDG_Prescaler_64            ((uint8_t)0x04)
#define IWDG_Prescaler_128           ((uint8_t)0x05)
#define IWDG_Prescaler_256           ((uint8_t)0x06)
#define IS_IWDG_PRESCALER(PRESCALER) (((PRESCALER) == IWDG_Prescaler_4) ||   \
                                      ((PRESCALER) == IWDG_Prescaler_8) ||   \
                                      ((PRESCALER) == IWDG_Prescaler_16) ||  \
                                      ((PRESCALER) == IWDG_Prescaler_32) ||  \
                                      ((PRESCALER) == IWDG_Prescaler_64) ||  \
                                      ((PRESCALER) == IWDG_Prescaler_128) || \
                                      ((PRESCALER) == IWDG_Prescaler_256))
/**
 * @}
 */

/** @defgroup IWDG_Flag
 * @{
 */
#define IWDG_FLAG_PVU          ((uint16_t)0x0001)
#define IWDG_FLAG_RVU          ((uint16_t)0x0002)
#define IS_IWDG_FLAG(FLAG)     (((FLAG) == IWDG_FLAG_PVU) || ((FLAG) == IWDG_FLAG_RVU))
#define IS_IWDG_RELOAD(RELOAD) ((RELOAD) <= 0xFFF)
/**
 * @}
 */

/**
 * @}
 */

/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/* Prescaler and Counter configuration functions ******************************/
void IWDG_WriteAccessCmd(uint16_t IWDG_WriteAccess);
void IWDG_SetPrescaler(uint8_t IWDG_Prescaler);
void IWDG_SetReload(uint16_t Reload);
void IWDG_ReloadCounter(void);

/* IWDG activation function ***************************************************/
void IWDG_Enable(void);

/* Flag management function ***************************************************/
FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG);

#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_IWDG_H */

/**
 * @}
 */

/**
 * @}
 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
